There is a memory loss caused by a ‘mistake’.“…when we are nostalgic, we take pictures.” says Susan Sontag.In these images, the photographer’s friends are hard to identify because of the ‘mistake’ made by the flash and the shutter; the only thing we can see are the incomplete fragments. A perfect photo is kind of cruel, revealing all the detailsbut destroying our imagination. However such ‘mistaken’ images are more like human memory, blurred by the shape, composed of nothing but symbols and codes. And this memory in the end will become the nostalgic of our shadow.But, is this really a mistake? Photography has long been a art form, and the camera is not only used to provide the evidence, but also considered to be something like a instrument that overtly or covertly creates the multi-meaningof technology and aesthetics. Is it the gorgeous music from the camera?Anyway, photography is silent, let’s put all the conversation and music back to that silent.